| Patents for F04B 49 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups (22,036) |
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| 03/23/1976 | US3945764 Variable displacement pump control assembly |
| 03/16/1976 | US3943715 Servo mechanism |
| 03/09/1976 | US3942912 Method for controlling the operation of two-speed, refrigerant motor compressors |
| 03/09/1976 | US3942325 Hydraulic throttle actuator |
| 03/02/1976 | US3941514 Torque limiting control |
| 03/02/1976 | US3941513 Variable displacement pump control assembly |
| 03/02/1976 | US3941507 Safety supervisor for sump pumps and other hazards |
| 03/02/1976 | US3941505 Method and apparatus for pumping fuel |
| 03/02/1976 | US3941073 Portable water bailing device for a boat |
| 03/02/1976 | US3940931 Automatic control circuit for an electrically powered hydraulic pump |
| 02/24/1976 | US3939755 Linear hydraulic motor |
| 02/17/1976 | US3938910 Oil well pumpoff control system |
| 02/17/1976 | US3938549 Tattletale annuciator and shut-down control for compressors or like equipment |
| 02/17/1976 | US3938425 Pump stroke adjustment device |
| 02/17/1976 | US3938369 Arrangement for controlling the viscosity of a fluid |
| 02/10/1976 | US3937622 Air purifier system |
| 02/10/1976 | US3937597 Pressurized fluid feed apparatus |
| 02/10/1976 | US3937596 Fluid pump driving control |
| 02/10/1976 | US3937243 Pressure control valve |
| 02/03/1976 | US3936239 Undercompression and overcompression free helical screw rotary compressor |
| 02/03/1976 | US3936237 Membrane-air pump adapted to function as a tachometer |
| 02/03/1976 | US3936236 Compressor intake valve and control means |
| 02/03/1976 | US3936233 Fuel injection pumps for internal combustion engines |
| 02/03/1976 | US3936231 Oil well pumpoff control system |
| 02/03/1976 | US3935971 Double pump device for mixing two or more liquids with variable relative ratios and concentrations |
| 02/03/1976 | US3935917 Hydraulic pump control system |
| 02/03/1976 | US3935706 Hydraulic control system |
| 01/27/1976 | US3935519 Control apparatus for two-speed compressor |
| 01/27/1976 | US3934625 Food dispensing valve means and control system for automatic container filling machines |
| 01/20/1976 | US3932992 Pressurized fluid supply power control means |
| 01/13/1976 | US3932853 Apparatus for warning of the failure of a sump pump |
| 01/13/1976 | US3931830 Pump systems for liquids |
| 01/06/1976 | US3930760 Hydraulic pump incorporating means for limiting volume of flow |
| 01/06/1976 | US3930759 Integral housing pump with servo controlled cheek plate |
| 01/06/1976 | US3930752 Oil well pumpoff control system utilizing integration timer |
| 01/06/1976 | US3930743 Fluidic governor system |